They remember being under the Soviet Union.
Yeah. Lithuania must remember how well the Berlin Blockade worked for the Soviet Union. To this day, history remembers how wonderful the Berlin Blockade was for Soviet foreign relations. [/sarcasm]
Well in this case, it might piss off the Russians, but the rest of the world supports Lithuania’s actions.
Besides they are part of the EU and EU imposed sanctions on Russia. Lithuania is obligated to uphold the sanctions.
If Russia has a problem with that they can start a war with the European Union, which would bring NATO directly into it.
It's not a blockade. Only items sanctioned by the EU are restricted from transfer by rail. In general, food and medical supplies are allowed, as are many consumer goods. Sanctioned items account for about 40%-50% of the rail cargo between Kaliningrad and Russia. Cargo sanctioned by the EU will now have to travel by sea to St. Petersburg, at significantly higher cost. In other words, this is not even remotely similar to the Soviet blockade of West Berlin.